Final Neuro - Auditory and Vestibular Systems

Question 1

**Where are the unipolar cell bodies or origin located that direct tooth pain

Answer 1

trigeminal Gasserian semilunar ganglion

Question 2

What are the three anatomical regions of the ear

Answer 2

external
middle
inner

Question 3

This region of the ear directs sound into the ear canal

Answer 3

outer ear

Question 4

This region of the ear contains the ossicles and window and transmits sound from the tympanic membrane to the cochlea

Answer 4

middle ear

Question 5

This region of the ear contains the osseous and membraneous labyrinth

Answer 5

inner ear

Question 6

When sound reaches the tympanic membrane where does it go next

Answer 6

along the bones of the middle ear to the oval window though the membranous labyrinth

Question 7

Which cavity contains the auditory neuroepithelium

Answer 7

membraneous labyrinth

Question 8

This is the hollowed-out region of the temporal bone filled with perilymph

Answer 8

osseous labyrinth

Question 9

This encloses the sensory organs of balance and hearing and consists of a series of endolymph ducts and chambers

Answer 9

membranous labyrinth

Question 10

What does the membranous labyrinth contain

Answer 10

neuroepithelium of the ear
cochlear duct and organ of Corti
vestibular labyrinth.

Question 11

What does the cochlear division of the inner ear consist of

Answer 11

scala media (cochlear duct)

Question 12

The membraneous labyrinth is separated from other channels by what

Answer 12

vestibular membrane above

basilar membrane below

Question 13

This is the perilymphatic space about the cochlear duct

Answer 13

scala vestibuli

Question 14

This is the space enclosed by the cochlear duct filled with endolymph and contains the neuroepithelium and basilar membrane

Answer 14

scala media

Question 15

This is the space below the cochlear duct

Answer 15

scala tympani

Question 16

What is found within the cochlear duct

Answer 16

scala media containing endolymph

Organ of Corti

Question 17

The cochlear duct is part of which portion of the membranous labyrinth

Answer 17

auditory

Question 18

This translates vibration and sound into neuron signals

Answer 18

Organ of Corti

Question 19

This peripheral process of the statoacoustic nerve (CN VII) is in contact with the hair cells of the organ of Corti

Answer 19

tectorial membrane; located above the hair cells

Question 20

What are the two auditory streams

Answer 20

“What”

“Where”

Question 21

What does the “what” auditory portion consist of

Answer 21

language processing

dorsal cochlear nucleus

Question 22

What does the “where” auditory portion consist of and relates to

Answer 22

*ventral cochlear nucleus

accessory auditory nuclei; superior olivary nucleus and nucleus of the lateral lemniscus

Question 23

This is involved with sound location via time delay and intensity difference, terminates in the outer hair cells of chochlea and plays a role with postnatal development

Answer 23

superior olivary complex

Question 24

This receives fibers from the cochlear nuclei and superior olivary nucleus to the inferior colliculus

Answer 24

lateral lemniscus

Question 25

This carries signals to the medial geniculate body

Answer 25

inferior colliculus

Question 26

This projects fibers to the primary auditory cortex located in the transverse temporal gyri of Heschl

Answer 26

medial geniculate body

Question 27

This is the main area of "what" language processing; the signals go in a ventral direction

Answer 27

superior temporal gyrus

Question 28

This is involved with planning a motor response to an incoming stimulus

Answer 28

superior parietal lobe

Question 29

What are the three balance related structures of the inner ear

Answer 29

utricle saccule semicircular canals

Question 30

Where in the inner ear is the vestibular labyrinth located

Answer 30

in the membraneous labyrinth filled with endolymph

Question 31

What are the two different subdivisions of the vestibular labyrinth

Answer 31

static labyrinth | dynamic labryinth

Question 32

This is located in the static labyrinth and serves as a "plumb bob-like" (gravity) reference for the head

Answer 32

otolith organ

Question 33

What does the otolith organ consist of

Answer 33

utriculus | sacculus

Question 34

These are hard crystals above the gelatinous substance that tumble during movement and stimulate the hair cells

Answer 34

otolith

Question 35

What are the components of the hair cells

Answer 35

kinocilium; longest one | stereocilia; short ones

Question 36

What two vestibular sensations is the static labyrinth sensitive to

Answer 36

vibrations | linear acceleration

Question 37

This is is located in the dynamic labyrinth and senses turning movements of the head

Answer 37

semicircular canals

Question 38

What are the canals of the semicircular canals

Answer 38

horizontal vertical ampulla at base

Question 39

What does the dynamic labyrinth enable us to do

Answer 39

maintain our gaze on a particular object while the head is moving

Question 40

What specific sensations are the semicircular canals sensitive to

Answer 40

vibrations (rapid back and forth movement) | angular acceleration

Question 41

What is the primary function of the dynamic labyrinth

Answer 41

provide reflex control of eye movements

Question 42

What is the macula

Answer 42

this is where the otoliths are embedded

Question 43

What stimulus are the otolith and macula sensitive to

Answer 43

head tilts; linear acceleration | directionally sensitive

Question 44

This is the neuroepithelium of the semi circular canal and is in the ampulla

Answer 44

crista ampullaris

Question 45

This is a gelatinous projection in which the kinocilia project; it floats in the endolympth

Answer 45

cupula

Question 46

What stimulus are the cristae sensitive to

Answer 46

angular acceleration; yes or no movements

Question 47

What is the cranial nerve that serves the vestibular portion of the inner ear

Answer 47

vestibulocochlear nerve (CN VIII)

Question 48

Where does CN VIII terminate

Answer 48

the pontocerebellar junction

Question 49

What is the brain strictures in which primary afferents of the semicircular canal and otolith organ terminate

Answer 49

vestibular nuclei | cerebellum

Question 50

In which brain structure do eye movement controlling fibers terminate

Answer 50

flocculonodular lobe

Question 51

What is the myelinated pathway that link the vestibular nuclei with the eye movement control nuclei

Answer 51

medial longitudinal fasciculus (MLF)

Question 52

This demonstrates the integrity of the vestibule-ocular reflex and the medial longitudinal fascicles (MLF)

Answer 52

doll's eye maneuver

Question 53

What happens to the eyes when affected with dolls eye maneuver

Answer 53

if the head is turned passively to one side, the eyes will respond by turning to the opposite side

Question 54

Where is the location of the primary vestibular cortex

Answer 54

posterior insular cortex